ganalytics: Interact with 'Google Analytics'

Functions for querying the 'Google Analytics' core reporting,
real-time, multi-channel funnel and management APIs, as well as the 'Google
Tag Manager' (GTM) API. Write methods are also provided for the management
and GTM APIs so that you can change tag, property or view settings, for
example. Define reporting queries using natural R expressions instead of
being concerned as much about API technical intricacies like query syntax,
character code escaping, and API limitations.